呋喃 、
(Benzyl-3,4-O-isopropyliden-β-L-arabinopyranosid-2-O-yl)-phenylglyoxylat 生成 [(3aS,6S,7R,7aS)-2,2-dimethyl-6-phenylmethoxy-4,6,7,7a-tetrahydro-3aH-[1,3]dioxolo[4,5-c]pyran-7-yl] (1R,5S,6R)-6-phenyl-2,7-dioxabicyclo[3.2.0]hept-3-ene-6-carboxylate 、 (1S,5R,6S)-6-Phenyl-2,7-dioxa-bicyclo[3.2.0]hept-3-ene-6-carboxylic acid (3aS,6S,7R,7aS)-6-benzyloxy-2,2-dimethyl-tetrahydro-[1,3]dioxolo[4,5-c]pyran-7-yl ester